How a Luopan Actually Works: the Chinese Compass and Its 24 Mountains
An honestly-framed look at the Chinese geomantic compass as an instrument: the needle housing, the rotating plate, and t...
Guides & How-tos · Worked examples · Real numbers
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Step-by-step how-tos, head-to-head comparisons and honest roundups — every guide worked through with current figures, then backed by a RECATOOLS calculator or AI-directory entry so you can act on it.
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Feng Shui Kua Numbers and the Eight Mansions, Explained: One Formula, Eight Trigrams, Three New Years
An honestly-framed look at how Eight Mansions (八宅) is actually constructed: the Later Heaven trigram grid it runs on,...
P/E, PEG and DCF: Three Ways to Tell If a Stock Is Actually Cheap
A low share price is not a cheap stock. Here is what the P/E ratio, the PEG ratio, discounted cash flow and the dividend...
The Chinese Zodiac Beyond Horoscopes: 12 Animals, 5 Elements, and How Compatibility Really Works
An honestly-framed look at how the Chinese zodiac is actually built: the twelve animals and the ancient Earthly Branches...
Attachment Styles: What Anxious, Avoidant and Secure Actually Mean
Anxious, avoidant, secure — the labels are everywhere, but unlike most personality quizzes, adult attachment has real re...
The Enneagram's Nine Types, Explained Without the Mysticism
A plain-English tour of the nine Enneagram types and the wings, lines and Centers around them, the real twentieth-centur...
Option Greeks, Explained: Delta, Gamma, Theta and Vega Without the Jargon
An option's price moves for four reasons, and the Greeks are the dials that tell you how much it responds to each. A pla...
What Bazi Actually Is: Reading the Four Pillars of Destiny, for Beginners
A plain-English, honestly-framed look at how a Bazi (Four Pillars) chart is constructed: eight characters, ten Heavenly...
The Big Five: The Personality Model Scientists Actually Trust (and Why MBTI Isn't It)
Four-letter quizzes made Myers-Briggs famous, but the personality model scientists actually build their research on is t...
Coast FIRE: The Retirement Number Nobody Coined (2026)
The coast number is compound interest run backwards, and nobody can say who named it. The worked math, the nominal-vs-re...
The FIRE Number: The 25x Rule Neither Founding Paper Contains (2026)
25x appears in neither Bengen 1994 nor the Trinity study — it is 1 ÷ 4%. What the papers really tested, MMM's actual ass...
Serve an LLM with vLLM on CPU in Docker: Learn the Production Engine Without a GPU (2026)
We ran vLLM v0.25.1's official CPU image in Docker on Apple Silicon, dodged a 10 GB CUDA decoy, survived three traps, an...
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